Read this: Every Mastodon album ranked from worst to best
And viewers of the video are pretty much in total agreement, too, with one comment joking, "I don't even want to listen to regular music anymore," and another writing, "I can totally see the dudes from Mastodon dancing to this haha, especially Brent." Now that is something we'd like to see.
Interestingly, this isn't William's first attempt at fusing Justin Timberlake's voice with a heavier song: he's also mashed Sexyback up with Slipknot's Psychosocial, and Rock Your Body with Papa Roach's Last Resort. Long may this ridiculousness continue…